InfiltrationQ = 0.018 Btu/ft3.hr.FoV K ∆THere K is the number of “Air exchanges per hour”and V is the interior volume of the house/building.Note:some exchange of airis necessary (you need to breath!), and this is not readily apparent in this figure.

Heat Pumps (one system: heating and cooling)As we saw with heat engines, the second law of thermodynamics puts limits on howmuch cooling you can get for a given amount of work (entropy of the Universe mustnot decrease!! => Heat out to warm reservoir must exceed heat in from cold res.)Heat output is greaterthan work in!

This is the end of the preview.
Sign up
to
access the rest of the document.

What students are saying

As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran
Temple University Fox School of Business ‘17, Course Hero Intern

I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana
University of Pennsylvania ‘17, Course Hero Intern

The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.